The Fjallraven Abisko Midsummer Jacket is a light, packable and really well ventilated and is a perfect companion when hiking in warm climates. The adjustable hood can be pulled up for protection against the sun or light showers and the three pockets have mesh linings so that they double as ventilation openings. Made from G-1000 Air Stretch and pliant polyester that protects against wind and sun without letting you overheat.